CD4093B: CD4093 specification

Pooja sapkal

Prodigy 80 points

Part Number: CD4093B

We are manufacturing Electronic Ballast. This is the PFC section we are using in our product .

This one is our Regulator circuit diagram. We have highlighted the ic's we are we are using that.

2) Input /output scope captures.

Above is the waveform of the circuit.

over 6 years ago

0 Pooja sapkal over 6 years ago

Prodigy 80 points

Hello please see attached document .

0 Emrys Maier over 6 years ago in reply to Pooja sapkal

TI__Guru* 96862 points

Hello Pooja,
I see the attached documents. Did you have a question?

0 Pooja sapkal over 6 years ago in reply to Emrys Maier

Prodigy 80 points

Hello,

Previously we where using HEF4093BE . but now PHILIPS part is discontinue .So we have ordered equivalent of that CD4093 BE. But that same part is not working in our system. Why is it so? It is just a Nand Gate . Our product is Electronic Ballast

0 Emrys Maier over 6 years ago in reply to Pooja sapkal

TI__Guru* 96862 points

I can try to help you narrow down the problem, but we will have to look at exactly what's going wrong.

Have you done any troubleshooting?
What do the inputs/outputs to each NAND gate look like on an oscilloscope? Is the NAND gate performing the NAND function?
We're primarily looking for slow or multiple edges or voltages that don't meet VIH/VIL.

0 Pooja sapkal over 6 years ago in reply to Emrys Maier

Prodigy 80 points

Hi Emrys,

We have attached some photos and videos of Drives that we seen on HEF4093 and CD4093. PIC No 1. is Input Drive at Pin No. 1, PIC No. 2. it Pin No. Input Drive at Pin No. 2, PIC No. 3 is Out Put Drive at Pin No. 3.

Please reply as soon as possible.

0 Emrys Maier over 6 years ago in reply to Pooja sapkal

TI__Guru* 96862 points

I need to see the inputs and outputs on the same scope shot -- I can't tell anything about the device's operation from separate shots.

0 Pooja sapkal over 6 years ago in reply to Emrys Maier

Prodigy 80 points

Hi Emrys,

I have attached to inputs and outputs in the excel file attached below.

Kindly look into it & provide us a solution for the same.

With RegardsDrives with HEF4093 & CD4093.xlsx

0 Emrys Maier over 6 years ago in reply to Pooja sapkal

TI__Guru* 96862 points

Hi Pooja,
I think there's a disconnect in communication here.

I need to see the inputs and outputs of the device on the SAME scope shot... The operation of this device depends on the input and output voltages, and the timing of the input signals. On separate displays, I cannot see how the timing is arranged, and I can't tell anything regarding the operation of the device.

0 Pooja sapkal over 6 years ago in reply to Emrys Maier

Prodigy 80 points

1004.Drives with HEF4093 & CD4093.xlsxDear Sir,

Please see the attachment below.

0 Emrys Maier over 6 years ago in reply to Pooja sapkal

TI__Guru* 96862 points

Hi Pooja,

Each scope shot still only has one input or output. I can't tell anything from this.

Here's an example of a scope shot with both inputs and the output in the same picture:

It is very easy to see in this shot that there is about 10ns of delay from the trigger of the output to the output actually going low.

0 Pooja sapkal over 6 years ago in reply to Emrys Maier

Prodigy 80 points

Hi Emrys,

On our oscilloscope we have only 2 channels, So we can only send 2 wave forms.

Can we contact you by other means like a phone call.

0 Emrys Maier over 6 years ago in reply to Pooja sapkal

TI__Guru* 96862 points

You can contact me directly by email at: Emrys (at) ti.com

If you cannot test the device, then I doubt I will be able to help you. Your next action would be to return the devices to your supplier and request a failure analysis. This will (eventually) get the devices back to me so I can test them in the lab. I doubt there is a problem, however, as all of our devices are tested prior to shipping.

It's more likely that your system was designed to operate with the original device you had, and the new device has slightly different characteristics.

Logic

Logic forum

CD4093B: CD4093 specification